Table 2 Score sheet used in the current research to calculate overall severity score according to the severity and frequency scores provided by the patients

0

frequency score: 0 and severity score: 0

1

frequency score:1 and severity score:1

2

frequency score:1 and severity score:2; or frequency score:2 and severity score:1

3

frequency score:2 and severity score:2; or frequency score:3 and severity score:1

4

frequency score:3 and severity score:2; or frequency score:1 and severity score:3

5

frequency score:2 and severity score:3; or frequency score:3 and severity score:3